the chicago teachers union has filed a lawsuit accusing a city of discriminating against african-american teachers and staff through its effort to reform or shut down local schools. the federal suit says more than half of the tenured teachers who lost their jobs in the most recent wave of school closings were african-american, despite african-americans comprising just 30% of tenured teachers overall and 35% in the underperforming schools that wound up -- wind up being closed. the teachers' union is seeking an injunction to stop chicago mayor rahm emanuel from closing any more schools. the nra has confirmed plans to continue its campaign against a proposed u.n. treaty that would regulate the global arms trade. the general assembly voted to reopen negotiations after the obama administration help stonewall talks in july. speaking reuters, an nra spokesperson said the massacre in newtown, connecticut will not change their opposition to the treaty saying, "we are as opposed to it today as we were when it first appeared." the nra has vowed to oppose global arms regulation marking its second maj